Results 71 to 80 of about 319,175 (286)

New craniodental materials of Falcarius utahensis (Theropoda: Therizinosauria) reveal patterns of intraspecific variation and cranial evolution in early coelurosaurians

open access: yesThe Anatomical Record, EarlyView.
Abstract Despite documented ecomorphological shifts toward an herbivorous diet in several coelurosaurian lineages, the evolutionary tempo and mode of these changes remain poorly understood, hampered by sparse cranial materials for early representatives of major clades. This is particularly true for Therizinosauria, with representative crania best known
William J. Freimuth, Lindsay E. Zanno
wiley   +1 more source

PSO algorithm-based robust design of PID controller for variable time-delay systems: AQM application

open access: yesJournal of Computer Science and Technology, 2015
This paper formulates a robust control for variable time-delay system models. An automatic tuning method for PID-type controller is proposed. The adopted method integrates robust control design using Quantitative Feedback Theory (QFT) with Particle Swan ...
Patricia Noemí Baldini   +3 more
doaj  

The coelurosaur theropods of the Romualdo formation, early Cretaceous (Aptian) of Brazil: Santanaraptor placidus meets Mirischia asymmetrica

open access: yesThe Anatomical Record, EarlyView.
Abstract The upper carbonate concretion levels of the Romualdo Formation (Aptian, Brazil) have yielded several theropod dinosaur remains, including spinosaurids and the coelurosaurs Santanaraptor placidus and Mirischia asymmetrica, the phylogenetic affinities of which are controversial.
Rafael Delcourt   +4 more
wiley   +1 more source

Treatment of Argentine hemorrhagic fever

open access: yesAntiviral Research, 2007
Argentine hemorrhagic fever (AHF) is a rodent-borne illness caused by the arenavirus Junin that is endemic to the humid pampas of Argentina. AHF has had significant morbidity since its emergence in the 1950s, with a case-fatality rate of the illness ...
D. Enria, A. Briggiler, Zaida Sánchez
semanticscholar   +1 more source

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto   +3 more
wiley   +1 more source

Tectonic and dynamic controls on the topography and subsidence of the Argentine Pampas: The role of the flat slab

open access: yes, 2010
We analyze the Pampean foreland (the Pampas) along the modern flat-slab segment of the south-central Andes between 31° and 33° South latitude and to the east of the Argentine “flat-slab” province, using flexural and gravity studies and computations of ...
F. Dávila   +2 more
semanticscholar   +1 more source

Histology and fossil diagenesis of a pterosaur tooth from the Crato Formation (Lower Cretaceous of Brazil)

open access: yesThe Anatomical Record, EarlyView.
Abstract Pterosaur dental biology remains poorly understood despite its importance for comprehending feeding strategies and flight adaptations. Here, we present the first comprehensive histological analysis of an ornithocheiriform pterosaur tooth from the Lower Cretaceous Crato Formation (Santana Group, Northeast Brazil).
Tito Aureliano   +3 more
wiley   +1 more source

Dossier « Coconstruire des démarches participatives pour accompagner les transitions territoriales » - Une démarche prospective innovante pour renouer les relations entre ville et villages du district de Tandil (province de Buenos Aires, Argentine)★

open access: yesNatures Sciences Sociétés
Attentifs aux enjeux d’intégration territoriale au niveau global, nous avons conçu une démarche prospective participative selon un itinéraire méthodologique qui permet de renouer des liens perdus entre des villes et leurs ruralités productives proches ...
Copello Luciano, Lardon Sylvie
doaj   +1 more source

Cranial anatomy of a Late Cretaceous aspidorhynchid fish (Neopterygii: Aspidorhynchiformes) from Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato   +4 more
wiley   +1 more source

EL ENCUENTRO FRONDIZI - FRANCO Y EL DESDIBUJAMIENTO DE DIFERENCIAS IDEOLÓGICAS PARA LA PROMOCIÓN DEL DESARROLLO

open access: yesRes Gesta, 2018
Arturo Frondizi was the first argentine president on office to visit Spain, where he met Francisco Franco and enthusiastic crowds. In this article we will examine the circumstances of the 1960 official reunion of the two countries after a period of ...
María Victoria Carsen
doaj  

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